MAX5015EVKIT Maxim Integrated Products, MAX5015EVKIT Datasheet - Page 9

• Manufacturer Part Number: MAX5015EVKIT
• Description: EVAL KIT FOR MAX5015
• Manufacturer: Maxim Integrated Products

Specifications of MAX5015EVKIT

• Main Purpose: DC/DC, Step Down
• Outputs And Type: 1, Isolated
• Voltage - Output: 5V
• Current - Output: 10A
• Voltage - Input: 36 ~ 72V
• Regulator Topology: Buck
• Frequency - Switching: 275kHz
• Board Type: Fully Populated
• Utilized Ic / Part: MAX5015
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -

Figure 3. Flyback Converter
To reduce power dissipation the high-voltage regulator
is disabled when the V
greatly reduces power dissipation and improves effi-
ciency. If V
threshold (V
abled, and soft-start is reinitiated. In undervoltage lock-
out the MOSFET driver output (NDRV) is held low.
If the input voltage range is between 13V and 36V, V+
and V
ed that the maximum power dissipation is not exceed-
ed. This eliminates the need for a tertiary winding.
Current-Mode PWM Controllers with Integrated
DD
may be connected to the line voltage provid-
Startup Circuit for Isolated Power Supplies
CC
CC
= 6.6V), the low-voltage regulator is dis-
falls below the undervoltage lockout
_______________________________________________________________________________________
C
C
V
DD
IN
SS
DD
voltage reaches 12.7V. This
V
SS_SHDN
DD
MAX5014
V+
NDRV
OPTO
GND
V
CS
CC
100Ω
N
C
T
M1
IN
N
P
OPTOCOUPLER
250VAC
The soft-start feature of the MAX5014/MAX5015 allows
the load voltage to ramp up in a controlled manner,
thus eliminating output voltage overshoot.
While the part is in UVLO, the capacitor connected to
the SS_SHDN pin is discharged. Upon coming out of
UVLO an internal current source starts charging the
capacitor to initiate the soft-start cycle. Use the follow-
ing equation to calculate total soft-start time:
4.7nF
R
C
Undervoltage Lockout (UVLO), Soft-Start,
SENSE
CC
N
S
C
OUT
TLV431
220Ω
V
OUT
R
R
1
2
and Shutdown
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